[Greg Elmassian]

Actually each unit is a modem, since both modulate (to send) and demodulate (to receive) because this is a bidirectional interface.

There's all kinds of gadgets to extend stuff on twisted pair, not to mention DSL which is optimized for much longer distances...

But the requirements are slowly being revealed, like no drilling holes. Maybe too much money for the units to move data over the wires...

Again, get the wireless with the directional antennas... wood does not attenuate rf like metal does...

Greg

 

[krs]

SV -

You are mixing up the two technologies.
The "dial-up" modem is a true modem using in-band frequencies in the voice band so it will work anywhere a telephone line exists.
It doesn't depend on any specific equipment at the Central Office, the Telephone company's switching equipment.
All the Telco does is provide a voice grade connection to the other end where a similar modem will connect and communicate.

But DSL doesn't work that way.
The term DSL modem is a bit of a misnomer but is generally used to make DSL a bit easier to understand.
With DSL, you have a special subscriber line circuit at the Central Office (CO) or a DSLAM, a Digital SubscriberLine Access Multiplexer at the CO - not something one can buy one circuit of, they are 8 or 16 ports per unit, require supporting equipment and are pretty expensive.

Knut

 

[krs]

Maybe this will help - you cannot connect ADSL back-to-back
http://www.dslreports.com/forum/r24644257-back-to-back-modem-configuration

 

[Michael Glavin]

Back on page 1, post 15 I described how you could use pretty much any existing wireless access point and or wireless router together with a plain old wireless router located in the garage configured as a wireless bridge or wireless client. You don’t need anything exotic or expensive a simple inexpensive Linksys WRT54G router will suffice and it will provide WiFi as well as four CAT 5 wired connections in the garage.

You can purchase a Linksys WRT54G from online vendors for about $50.00 that has been flashed with TOMATO software or other similar offerings; this would allow you to specifically turn up the power output! There are many other user definable parameters which are all accessed via the routers web interface and all are again user friendly for tweaking the unit to your own needs.

A range extending antenna would likely be an excellent accessory located near a window connected to the wireless access point in the cabin. In my experience this worked very well at my former home, I had an excellent signal over the properties entire acre or better.

Michael

 

[kormsen]

Knut,
as i don't have two ADSL receivers at the moment, i can't test. (but i doubt, that you are right. if adsl were so complicated and expensive, we would not have it here in the backwoods of a poor banana republic.)
with splitter i mean the grey box (marked "B").
it takes in a phonejack from the incoming line (the "A"box, where the streetcables are screwed to a phone jack) and gives out one telephone and one "computer"line. (both with telephone jacks) as it is glued shut, i ignore, if there is any electronics inside.
(ignore "D". that just ables paralell connected phones) but beside "D" you see a simple grey telephone cable. that goes into the router ("C").

 

[krs]

Kormsen -

The box "B" is simply a dual jack
data:image/jpeg;base64,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
plus a filter
data:image/jpeg;base64,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
in a larger box.

Or you can get the dual jack and filter already packaged like this which electrically is identical to your box "B"

Two ADSL modems will just not work back-to-back, they were never designed to do that.
This is obvious from the system diagram:

and also from this discussion where someone asked exactly that question.

http://tcpmag.com/qanda/article.asp?EditorialsID=417

Maybe I should mention that I spent part of my life as a design manager in the Tele- and Data-Communications field but if you don't believe me, do a bit of googling about ASDL.

Knut